Clinical Quality Framework Common FHIR Assets (US-Based), published by Clinical Quality Framework. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/cqframework/cqf-us/ and changes regularly. See the Directory of published versions

Architectural Guidance

This topic provides architectural guidance for implementers supporting FHIR and CQL-based questionnaires, typically from a DTR-style application:

• Initial data retrieval to support questionnaire population and initial flow control
  • Minimizing the number of queries
  • Leveraging server-side filters
  • Optimizing for initial question display
  • Managing query inter-dependencies to maximize performance
• Additional data retrieavl and flow control
  • Managing queries that depend on user-entered data
  • Managing when queries need to be re-run
  • Guidance on adaptive query capabilities
• Best practices for
  • Performance data access
  • Readability
  • Accessability (authoring)
  • Maintainability

• Version support best practices

• Questionnaire prepopulation
  • Note that when populating a questionnaire response, if the questionnaire response already has a value for the initial expression, don’t populate